add timer_helper_test.dart

Signed-off-by: Sahil Kumar <[email protected]>

packages/stream_chat/test/src/ws/timer_helper_test.dart

@@ -0,0 +1,98 @@
+import 'package:stream_chat/src/ws/timer_helper.dart';
+import 'package:test/test.dart';
+
+void main() {
+  late TimerHelper timerHelper;
+
+  setUp(() {
+    timerHelper = TimerHelper();
+  });
+
+  tearDown(() {
+    timerHelper.cancelAllTimers();
+  });
+
+  test('setTimer', () async {
+    expect(timerHelper.hasTimers, isFalse);
+
+    var count = 0;
+    void callback() => count += 1;
+
+    timerHelper.setTimer(
+      const Duration(milliseconds: 500),
+      callback,
+    );
+
+    expect(count, 0);
+    await Future.delayed(const Duration(milliseconds: 500));
+    expect(count, 1);
+
+    expect(timerHelper.hasTimers, isTrue);
+  });
+
+  test('setImmediateTimer', () async {
+    var count = 0;
+    void callback() => count += 1;
+
+    timerHelper.setTimer(
+      const Duration(milliseconds: 500),
+      callback,
+      immediate: true,
+    );
+
+    expect(count, 1);
+    await Future.delayed(const Duration(milliseconds: 500));
+    expect(count, 2);
+  });
+
+  test('setPeriodicTimer', () async {
+    expect(timerHelper.hasTimers, isFalse);
+    var count = 0;
+    void callback() => count += 1;
+
+    timerHelper.setTimer(
+      const Duration(milliseconds: 500),
+      callback,
+    );
+
+    expect(count, 0);
+    await Future.delayed(const Duration(milliseconds: 500));
+    expect(count, 1);
+
+    expect(timerHelper.hasTimers, isTrue);
+  });
+
+  test('setImmediatePeriodicTimer', () async {
+    var count = 0;
+    void callback(_) => count += 1;
+
+    timerHelper.setPeriodicTimer(
+      const Duration(milliseconds: 500),
+      callback,
+      immediate: true,
+    );
+
+    expect(count, 1);
+    await Future.delayed(const Duration(milliseconds: 500));
+    expect(count, 2);
+  });
+
+  test('cancelTimer', () {
+    expect(timerHelper.hasTimers, isFalse);
+    final id = timerHelper.setTimer(const Duration(seconds: 3), () {});
+    expect(timerHelper.hasTimers, isTrue);
+    timerHelper.cancelTimer(id);
+    expect(timerHelper.hasTimers, isFalse);
+  });
+
+  test('cancelAllTimers', () {
+    expect(timerHelper.hasTimers, isFalse);
+    timerHelper
+      ..setTimer(const Duration(seconds: 3), () {})
+      ..setTimer(const Duration(seconds: 6), () {})
+      ..setTimer(const Duration(seconds: 9), () {});
+    expect(timerHelper.hasTimers, isTrue);
+    timerHelper.cancelAllTimers();
+    expect(timerHelper.hasTimers, isFalse);
+  });
+}